how do I seperate hair texture from regular texture
What you want are 2 materials:

one material for the skin (Image Texture and Principled BSDF)
and one for the hair. For Cycles, you can use the Principled Hair BSDF. It works only in Cycles and you have to switch to Cycles to be able to add the node. To have a fallback for Eevee and the Material Preview mode you can add another node setup in the same material that is used for Eevee only.


Just add another material slot for the head/emitter and create a material. After that, you can select it in the hair settings: Particle Properties &gt; Render &gt; Material
If you use Cycles make sure you have the settings for the Hair Shape correct (small values) else you will get very &quot;fat&quot; hair.